S
M
T
W
T
F
S
26
67°
39°
27
69°
44°
28
72°
46°
29
65°
43°
30
65°
44°
1
66°
47°
2
66°
45°
3
70°
48°
4
71°
49°
5
72°
48°
6
66°
42°
7
70°
46°
8
70°
43°
9
69°
46°
10
73°
46°
11
77°
49°
12
78°
49°
13
79°
52°
14
80°
54°
15
80°
55°
16
75°
54°
17
77°
55°
18
75°
52°
19
80°
51°
20
82°
53°
21
81°
45°
22
74°
47°
23
75°
49°
24
80°
48°
25
78°
50°
26
79°
53°
27
80°
46°
28
77°
46°
29
77°
50°
30
82°
51°
31
86°
52°
1
86°
52°
2
87°
51°
3
87°
54°
4
88°
61°
5
84°
53°
6
84°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Grand Junction
Grand Junction's May 2026 forecast shows daily high temperatures ranging from 65° to 88°, with overnight lows between 39° and 61°. The average high for May is 76° with an average low of 49°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Grand Junction. See also: June | July | August.
